PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-19:28:10
G02     62.8           31.3                8.3 +/-    1.78      14.2 +/-    1.78  0.030 / 0.040
G05     51.9           56.7                8.7 +/-    0.62      10.2 +/-    0.62  0.040 / 0.040
G12     180.2          22.8               11.4 +/-    1.38      23.5 +/-    1.38  0.170 / 0.280
G13     123.0          19.1               13.3 +/-    2.44      29.9 +/-    2.44  0.210 / 0.280
G15     163.7          15.1               13.8 +/-    1.33      34.2 +/-    1.33  0.080 / 0.130
G21     275.6          19.8                8.9 +/-    1.66      19.7 +/-    1.66  0.070 / 0.120
G25     227.2          47.2                9.2 +/-    3.41      12.1 +/-    3.41  0.060 / 0.070
G29     331.0          58.8                8.0 +/-    0.46       9.2 +/-    0.46  0.080 / 0.100